Cloth-cutting machine



(No Model.)

2 H. T R. A W A CLOTH GETTING MAGHINE. No, 469,072

Patented Feb. 16, 1892.

BY a l $3M! ATTORNEYS WITNESSES:

us ca PNam-Lrmc., WASHINBYDN, o. c.

UhIlTED STATES PATENT OFFICE.

ALBIN VARTH, OF STAPLETON, NEV YORK.

'CLOT H-CU TTlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 469,072, dated February16, 1892.

' Application filed July 9, 1891. Serial No. 398,970. (No model.)

To all whom it may concern.-

and illustrated in the accompanying drawings, in which-- Figure 1represents a side elevation. Fig. 2 is a horizontal section in theplanem at, Fig. 1. Fig. 3 is a detached elevation of the cutter-head, ona larger scale than the previous figures, showing one side. Fig. 4 is asimilar elevation showing the other side of the cutter-head. Fig. 5 is avertical section in the plane 'y 1 Fig. 3. Fig. 6 is a horizontalsection in the plane 2 2, Fig. 3, on a larger scale than Figs. i and 5.Fig. 7 is a horizontal section in the plane to w, Fig. 5. Fig. 8 is anelevation of a portion of the cutter-head.

In the drawings the letterA designates the cloth-liftin g foot-plate,which is movable over the table WV and from which rises the stand erd B,to which is firmly secured the casing O. The standard B carries theknife G, and in the example shown in the drawings, this knife has acircular form, and I impart motion to this knife by means of a belt K,which extends down through the casing O and round a pulley I-I, carriedby the standard B, as will be presently more fully explained.

From the bottom of the casing 0 extends a bracket D, parallel with thestandard B. (Best seen in Figs. 5 and 6.) On this bracket is adjustablysecured the tubular bearing E for the spindle F,which carries thecircular knife G and the pulley H. The spindle F is adjusted in thetubular bearing E by means of a screw a, Figs. 5 and 6, and the knife Gand pulley H are secured to said spindle by a screw 12.

On the rear end of the tubular bearing E is fastened a lubricating-cupI, Fig. 5. The bearing E projects from a plate 6, which can be adjustedin the proper relation to the knife-receiving socket a Fig. 5, in theclothlifting foot plate A. Thecasing'C engages an eye 0 on the end ofthe arm J, and on this arm are mounted the two guide pulleys d e for thebelt K, which is intended to impart motion to the knife G. This beltextends down through the casing O and engages the pulley II on theknife-spindle F, Figs. 1 and 5. The arm J is connected to an arm S,which swivels on the spindle V, so that the cutterhead can be freelyturned in the eye and swung round the spindle V. The pulleys cl 6 arearranged one above the other and the standard carrying the knife turnsfreely in the eye 0 of the arm J, and it can be turned by a handleL,applied to the casing C, or by applying the hand directly to thestandard. The pulleys cl 6 are mounted on one end of a lever M, whichhas its fulcrum in a standard N, which rises from the arm .I,and theopposite end of said lever is adj ustably secured to an arm P, so thatit can be raised or lowered and fastened in the required position by aset-screw f. By these means the tension of the driving-belt K can bereadily adjusted.

On the standard Bis adjustably secured a protector Q, which extends downover the face of the knife G. In cutting through a pile of materialconsisting of a large number of layers the lowest layer in the pile iscut to the point 1, Fig. 3, while the upper layer is cut to the point 2,and in order to produce a square cut that portion of the pile which haspassed the knife must be raised from the position shown in Fig. 3 tothat shown in Fig. 8. To enablethe operative to perform this operationof lifting the pile with safety, the protector must be so arranged thatthe cut portion on being raised will pass up on the outside face of theprotector. This protector is secured to the standard B by means of a setscrew, which passes through a slot in the protector, (see Fig. 1,) sothat the latter can be readily adjusted at the required distance.

from the foot-plate.

In order to keep the edge of the knife G sharp as the cutting operationprogresses, I

have applied a grinding device, which is constructed as follows: On thebracket D is adjustably secured a tubular socket g, which forms thebearing for a rod 72., in the inner forked end of which is secured apivot i", on which swings a spindle 2'. On this spindle is looselymounted a tube j, on which are mounted the grinding-disks 7c 7c,whichare knife, both grinding-disks are out of ccntaet held at the properdistance apart by a washer Z, interposed between them, and which areretained in position upon the tubej by a flange j at the inner end ofsaid tube and by a nut j engaging a screw-thread out upon the outerportion of said tube, Fig. 7. hen the nut 3' is screwed up, thegrinding-disks are retained on the tube j in such a position that theystraddle the knife G, Figs. 5 and 7, one. of said disks being situatedon the inside of the knife and the other on its outside. At the sametime the tube j, which carries the grinding-disks, is free to revolveupon the spindle 1', which can swing in a horizontal plane on the pivot71 and which extends transversely ac os the p ne of h n e- On h ut end fh spin le t se eur d net h c fer-1 1s a handle an als Step e Pre eet hetuh j zx' d op-pi g 01 en th knife G s in m t n, he p ativet e ho d othe. net or h ndl and mpa to the p n n osci lat o whereby th g i ndisks. are brought in contact with the sides of the knife, and by thiscontact a revolving motion is imparted to said disks and to the tu e.23. i h ppe h emet th same time a gentle friction is produced bewee hgr hding sks and the fa e e knife, and by this friction the knifeeedgeis kept sharp. If the spindle t'is moved into, a position at rightangles to the plane of the with the knife; but in order to keep theknife perfectly sharp two grindingedisks are TQ'. qu t-ed. ich are u t don opposi e s d e the knife and can be thrown in or out ofac.- tionsimultaneously,

By referring to Fig, 7 it will be seen that the red is b r Out t ece vea p ng wh ch acts 110 a p s the fia e et ic bears against the flat innerend of the spindle i, so that when this spindle, is left free to followthe action of the spring h the grindingd ke h h e ain n a pes tien pa alel with the knife G, and they act upon the faces of the cutting-edge ofsaid knife only when an oscillating motion is imparted to the spindle t.

In the example illustrated in the drawings I have shown twogrinding-disks which act upon the Opposite sides of the knife; but inexceptional cases a single grinding-disk may be sufficient.

From the foregoing description it will be seen that motion is impartedto the knife G by means of a belt, which is carried down through theinterior of the casing G and through the eye 0 of the arm J, so that thecutters-head can be freely turned round in the eye withoutinterferin gwith the action of the driving-belt. It will be also seen that the twobranches of the driving-belt are guided by the pulleys d e, which arecarried by the arm J ,so that when the cutter-head is turned in the eye0 only that portion of the belt be tween the guide-pulleys d e and thepulley H will be twisted and the action of said belt will not bedisturbed. At the same time if the operative happens to release the;handle L or the casing C while the knife is in motion the cutter-head inmy machine is not liable to be twirled round and to cause damage, and bythese means agreat defect common to all cloth-cutting machines withcircular knives as heretofore constructed is avoided.

By referring to Fig. 1 it will be seen that the belt'K receives itsmotion from an electromotor R, mounted on an arm S, which swivels on thespindle V and carries the arm J, as described in Letters Patent No.444,286, granted to me January 6, 1891, or said belt may receive itsmotion from a carriage T and from a steam-engine er ether me er, as. eribed n Let rs Pa n 44 .28 grante o. me

anuary 6, 9 ehd I do n t cl im n this I appl t o ny h g sh w d describedin he above-nam d pa e ts- Y at I la m as ne i nd. esire to eeure y erPatent. s

pulley H being adapt to enga a belt exe d ng down th u h th i t el y asc ibed.

2- e eemhina e th a s andard cal-- yins e lo hi ing eet ple e d a racketD, f the t b ar he ring ee r te a d.

su ubracket, th shaft F, mounted in aid hearin nd ca y ng the pu ey H anhe kni e G, s d pu y be ng adap d; o ngage t e dr inse t, a the luhieetinsup I, se u ed to the tubular bearing E, substantially asdescribed.

3. The com ination, wi h he eloihrlifting fe t-pla e, the stan a d B, heh ft ared by s i ta da d, th pulley H, d the knif G, mounte n s id af fth an J th ea 0, n i g t y termed o said arm, the guide-pulleys d a,mounted on he o i a i arm M, the pu l y H, and 6 being adapted to engagethe drivingsbelt, and means for adj s g e win. M n t required position,substantially as described.

4. The combination, with a standard carrying a rotary knife, of anoscillating spindle carried by said standard and extending in adirection transverse to the plane of the knife, and two grinding-diskssituated on op osite sides of the knife and free to rotate on thespindlet' by frictional contact with the knife, substantially asdescribed.

5. The combination, with a standard carryin g a rotary knife, of anoscillating spindle 'i, a tubular bearing j, mounted on this spin dleand free to rotate on the same, two grindlug-disks situated on oppositesides of the knife and mounted on the tubular bearing j,

and e j st b ea 9 fo the oscillating spindle, substantially asdescribed. 6. The combination, with a standard car- 10 and guide-pulleysd e, mounted on the arm,

I the said pulleys d, e, and 11 being adapted to engage adriving-beltextending down through the casing, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing I Witnesses.

ALBIN WVARTH. Witnesses:

W. HAUFF, E. E KASTENHUBER.

